Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
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Bulb .......................................... T-9
Base Type ..................................... Lock-In 8-Pin
EIA Outline ................................... 9-30
EIA Base ...................................... 7CJ
Filament Voltage .............................. 2.8/1.4 DC V
Filament Current .............................. 0.05/0.1 A
Pentode
Input ......................................... 5.5 pf
Output ........................................ 8 pf
Grid to Plate ................................. 0.007 pf
Class A Amplifier
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 325K Ω
Transconductance .............................. 1700 µ
Plate Current ................................. 2.9 mA
Grid No. 2 Current ............................ 1.2 mA
If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.
(c) 1994-2021 by William A. Beech, NJ7P
Thu, 30 Jun 2022 02:42:10 -0700